FeatureCyathea arborea (West Indian Tree Fern)Cyathea cooperi (Australian Tree Fern)Cyathea contaminans (Blue Tree Fern or Pakis Tihang)Cyathea latebrosa (Pakis Sieur)
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DistributionNative to the Caribbean (e.g., Puerto Rico, St. Thomas, St. John, Tortola) to northern South America (Colombia).Native to northeastern Australia; naturalized in Hawaii, New Zealand, and southwestern Australia.Widely distributed in Southeast Asia (Malesia region: Malaysia, Indonesia including Borneo and Sumatra, Myanmar, Indochina).Native to Indochina (Cambodia, Thailand) and Southeast Asia (Malay Peninsula, Indonesia including Borneo and Sumatra).
HabitatWet tropical forests, moist clearings, open banks, hillsides, landslide areas, secondary forest glades; low to high elevations.Forest margins, open coastal areas, gullies, rainforests, roadsides, streamcourses; prefers high humidity and moist soils.Disturbed/open spaces in humid forests, subtropical areas; lowlands to mountains (up to 1,700 m).Forest fringes, open areas; lowlands to mountains (up to 1,200 m or more).
Trunk HeightUp to 12 m.Up to 12 m.Up to 10 m.Up to 10 m.
Trunk Diameter10-15 cm.Up to 15 cm.Up to 20 cm.Up to 13 cm.
Trunk CharacteristicsSlender, often patterned with scars from fallen fronds; covered in scales or trichomes.Slender, hard, coarse, with circular scars; fast-growing.Straight, without branches; thick fibers (up to 0.5 m at base, decreasing upward); unique motifs (e.g., batik-like) when peeled.Often curved, with many branches; rarely has fibers on the trunk.
Frond (Lamina) LengthUp to 3 m; bipinnate-pinnatifid.Up to 3-4 m; tripinnate, lacy, spreading crown.Up to 3.5 m.Up to 2.1 m.
Stipe (Leaf Stalk)Covered in scales.Sturdy, with spines.60 cm long, sturdy, big and sharp spines (up to 0.5 cm).Over 60 cm long, sturdy, blunt spines (less than 0.5 cm).
Sori (Spore Clusters)On veins, under fronds.Indusiate, on veins.6-8 pairs, large, under leaves.5-7 pairs, small, under leaves.
Other NotesPantropical genus type species; colonizes disturbed areas quickly.Popular ornamental; invasive potential in non-native areas; thrives in dappled shade.Versatile uses: ornamental, handicrafts (e.g., flower pots from trunk), growing medium; more fibrous and straight than C. latebrosa.Mainly used as growing medium (e.g., for orchids) due to less dense fibers; less versatile than C. contaminans.
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